[skip CI] Translate dde-dock.ts in ja

52% of minimum 50% translated source file: 'dde-dock.ts'
on 'ja'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

Author: transifex-integration[bot]

plugins/dde-dock/translations/dde-dock_ja.ts

@@ -323,11 +323,11 @@
     </message>
     <message>
         <source>Off</source>
-        <translation type="unfinished"/>
+        <translation>OFF</translation>
     </message>
     <message>
         <source>Light</source>
-        <translation type="unfinished"/>
+        <translation>ライト</translation>
     </message>
     <message>
         <source>Dark</source>